Rocking a skullet, my "face washing" goes to the hairline.

Since I use stuff that is gentler than regular soap on my face and other sensitive spots, I tend to use them on the bare areas of my scalp as well. Then again, I also tend to use really gentle shampoos too, so I could easily get away with using that on my face, I reckon.

But, yeah, in the shower I treat my scalp the same as my face, same products and such. When refreshing myself during the day, I use the same warm washcloth with no soap on the scalp too. Keeps things exfoliated well enough, and also keeps sebum from getting annoying.